AC Circuits
10 Questions
| Attempts: 398
Finding the the correct word being describe in the statement.
Questions and Answers
- 1.
What is the word being describe here?" the number of times the waveform repeats itself within a one second time period".
- A.
Period
- B.
Amplitude
- C.
Frequency
Correct Answer
C. Frequency -
- 2.
is the magnitude or intensity of the signal waveform measured in volts or amps.
- A.
Period
- B.
Amplitude
- C.
Frequency
Correct Answer
B. Amplitude -
- 3.
is the length of time in seconds that the waveform takes to repeat itself from start to finish.
- A.
Period
- B.
Amplitude
- C.
Frequency
Correct Answer
A. Period -
- 4.
•Vectors, Phasors and Phasor Diagrams only apply to sinusoidal AC waveforms.
- A.
True
- B.
False
Correct Answer
A. True -
- 5.
•All phasors are drawn rotating in an anticlockwise direction. All the phasors ahead of the reference phasor are said to be ___________ while all the phasors behind the reference phasor are said to be ___________.
Correct Answer
leading
lagging - 6.
A coil has a resistance of 30Ω and an inductance of 0.5H. If the current flowing through the coil is 4amps and its frequency is 50Hz. What will be the inductive reactance?
- A.
357Ohms
- B.
257Ohms
- C.
157Ohms
Correct Answer
C. 157Ohms -
- 7.
A coil has a resistance of 30Ω and an inductance of 0.5H. If the current flowing through the coil is 4amps and its frequency is 50Hz. What will be the impedance?
- A.
159.8Ohms
- B.
259.8Ohms
- C.
359.8Ohms
Correct Answer
A. 159.8Ohms -
- 8.
A coil has a resistance of 30Ω and an inductance of 0.5H. If the current flowing through the coil is 4amps and its frequency is 50Hz. What will be the voltage drop across resistor?
- A.
140 V
- B.
130 V
- C.
120 V
Correct Answer
C. 120 V -
- 9.
A coil has a resistance of 30Ω and an inductance of 0.5H. If the current flowing through the coil is 4amps and its frequency is 50Hz. What will be the voltage drop across inductor?
- A.
628 V
- B.
528 V
- C.
428 V
Correct Answer
A. 628 V -
- 10.
A coil has a resistance of 30Ω and an inductance of 0.5H. If the current flowing through the coil is 4amps and its frequency is 50Hz. What will be the supply voltage?
- A.
620 V
- B.
630 V
- C.
640 V
Correct Answer
C. 640 V -
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Current Version
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Mar 16, 2022Quiz Edited by
ProProfs Editorial Team -
May 11, 2012Quiz Created by
Pteichrob
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